src/gallium/drivers/r300/r300_blit.c

   1 /*
   2  * Copyright 2009 Marek Olšák <maraeo@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "r300_context.h"
  24 #include "r300_texture.h"
  25
  26 #include "util/u_format.h"
  27
  28 static void r300_blitter_save_states(struct r300_context* r300)
  29 {
  30     util_blitter_save_blend(r300->blitter, r300->blend_state.state);
  31     util_blitter_save_depth_stencil_alpha(r300->blitter, r300->dsa_state.state);
  32     util_blitter_save_stencil_ref(r300->blitter, &(r300->stencil_ref));
  33     util_blitter_save_rasterizer(r300->blitter, r300->rs_state.state);
  34     util_blitter_save_fragment_shader(r300->blitter, r300->fs.state);
  35     util_blitter_save_vertex_shader(r300->blitter, r300->vs_state.state);
  36     util_blitter_save_viewport(r300->blitter, &r300->viewport);
  37     util_blitter_save_clip(r300->blitter, &r300->clip);
  38     util_blitter_save_vertex_elements(r300->blitter, r300->velems);
  39     /* XXX this crashes the driver
  40     util_blitter_save_vertex_buffers(r300->blitter, r300->vertex_buffer_count,
  41                                      r300->vertex_buffer); */
  42 }
  43
  44 /* Clear currently bound buffers. */
  45 static void r300_clear(struct pipe_context* pipe,
  46                        unsigned buffers,
  47                        const float* rgba,
  48                        double depth,
  49                        unsigned stencil)
  50 {
  51     /* XXX Implement fastfill.
  52      *
  53      * If fastfill is enabled, a few facts should be considered:
  54      *
  55      * 1) Zbuffer must be micro-tiled and whole microtiles must be
  56      *    written.
  57      *
  58      * 2) ZB_DEPTHCLEARVALUE is used to clear a zbuffer and Z Mask must be
  59      *    equal to 0.
  60      *
  61      * 3) For 16-bit integer buffering, compression causes a hung with one or
  62      *    two samples and should not be used.
  63      *
  64      * 4) Fastfill must not be used if reading of compressed Z data is disabled
  65      *    and writing of compressed Z data is enabled (RD/WR_COMP_ENABLE),
  66      *    i.e. it cannot be used to compress the zbuffer.
  67      *    (what the hell does that mean and how does it fit in clearing
  68      *    the buffers?)
  69      *
  70      * - Marek
  71      */
  72
  73     struct r300_context* r300 = r300_context(pipe);
  74     struct pipe_framebuffer_state* fb =
  75         (struct pipe_framebuffer_state*)r300->fb_state.state;
  76
  77     r300_blitter_save_states(r300);
  78
  79     util_blitter_clear(r300->blitter,
  80                        fb->width,
  81                        fb->height,
  82                        fb->nr_cbufs,
  83                        buffers, rgba, depth, stencil);
  84 }
  85
  86 /* Copy a block of pixels from one surface to another using HW. */
  87 static void r300_hw_copy_region(struct pipe_context* pipe,
  88                                 struct pipe_resource *dst,
  89                                 struct pipe_subresource subdst,
  90                                 unsigned dstx, unsigned dsty, unsigned dstz,
  91                                 struct pipe_resource *src,
  92                                 struct pipe_subresource subsrc,
  93                                 unsigned srcx, unsigned srcy, unsigned srcz,
  94                                 unsigned width, unsigned height)
  95 {
  96     struct r300_context* r300 = r300_context(pipe);
  97     struct r300_textures_state* state =
  98         (struct r300_textures_state*)r300->textures_state.state;
  99
 100     /* Yeah we have to save all those states to ensure this blitter operation
 101      * is really transparent. The states will be restored by the blitter once
 102      * copying is done. */
 103     r300_blitter_save_states(r300);
 104     util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state);
 105
 106     util_blitter_save_fragment_sampler_states(
 107         r300->blitter, state->sampler_state_count,
 108         (void**)state->sampler_states);
 109
 110     util_blitter_save_fragment_sampler_views(
 111         r300->blitter, state->sampler_view_count,
 112         (struct pipe_sampler_view**)state->sampler_views);
 113
 114     /* Do a copy */
 115     util_blitter_copy_region(r300->blitter, dst, subdst, dstx, dsty, dstz,
 116                              src, subsrc, srcx, srcy, srcz, width, height,
 117                              TRUE);
 118 }
 119
 120 /* Copy a block of pixels from one surface to another. */
 121 static void r300_resource_copy_region(struct pipe_context *pipe,
 122                                       struct pipe_resource *dst,
 123                                       struct pipe_subresource subdst,
 124                                       unsigned dstx, unsigned dsty, unsigned dstz,
 125                                       struct pipe_resource *src,
 126                                       struct pipe_subresource subsrc,
 127                                       unsigned srcx, unsigned srcy, unsigned srcz,
 128                                       unsigned width, unsigned height)
 129 {
 130     enum pipe_format old_format = dst->format;
 131     enum pipe_format new_format = old_format;
 132
 133     if (dst->format != src->format) {
 134         debug_printf("r300: Implementation error: Format mismatch in %s\n"
 135             "    : src: %s dst: %s\n", __FUNCTION__,
 136             util_format_short_name(src->format),
 137             util_format_short_name(dst->format));
 138         debug_assert(0);
 139     }
 140
 141     if (!pipe->screen->is_format_supported(pipe->screen,
 142                                            old_format, src->target,
 143                                            src->nr_samples,
 144                                            PIPE_BIND_RENDER_TARGET |
 145                                            PIPE_BIND_SAMPLER_VIEW, 0) &&
 146         util_format_is_plain(old_format)) {
 147         switch (util_format_get_blocksize(old_format)) {
 148             case 1:
 149                 new_format = PIPE_FORMAT_I8_UNORM;
 150                 break;
 151             case 2:
 152                 new_format = PIPE_FORMAT_B4G4R4A4_UNORM;
 153                 break;
 154             case 4:
 155                 new_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 156                 break;
 157             case 8:
 158                 new_format = PIPE_FORMAT_R16G16B16A16_UNORM;
 159                 break;
 160             default:
 161                 debug_printf("r300: surface_copy: Unhandled format: %s. Falling back to software.\n"
 162                              "r300: surface_copy: Software fallback doesn't work for tiled textures.\n",
 163                              util_format_short_name(old_format));
 164         }
 165     }
 166
 167     if (old_format != new_format) {
 168         dst->format = new_format;
 169         src->format = new_format;
 170
 171         r300_texture_reinterpret_format(pipe->screen,
 172                                         dst, new_format);
 173         r300_texture_reinterpret_format(pipe->screen,
 174                                         src, new_format);
 175     }
 176
 177     r300_hw_copy_region(pipe, dst, subdst, dstx, dsty, dstz,
 178                         src, subsrc, srcx, srcy, srcz, width, height);
 179
 180     if (old_format != new_format) {
 181         dst->format = old_format;
 182         src->format = old_format;
 183
 184         r300_texture_reinterpret_format(pipe->screen,
 185                                         dst, old_format);
 186         r300_texture_reinterpret_format(pipe->screen,
 187                                         src, old_format);
 188     }
 189 }
 190
 191 /* Clear a region of a color surface to a constant value. */
 192 static void r300_clear_render_target(struct pipe_context *pipe,
 193                                      struct pipe_surface *dst,
 194                                      const float *rgba,
 195                                      unsigned dstx, unsigned dsty,
 196                                      unsigned width, unsigned height)
 197 {
 198     struct r300_context *r300 = r300_context(pipe);
 199
 200     r300_blitter_save_states(r300);
 201     util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state);
 202
 203     util_blitter_clear_render_target(r300->blitter, dst, rgba,
 204                                      dstx, dsty, width, height);
 205 }
 206
 207 /* Clear a region of a depth stencil surface. */
 208 static void r300_clear_depth_stencil(struct pipe_context *pipe,
 209                                      struct pipe_surface *dst,
 210                                      unsigned clear_flags,
 211                                      double depth,
 212                                      unsigned stencil,
 213                                      unsigned dstx, unsigned dsty,
 214                                      unsigned width, unsigned height)
 215 {
 216     struct r300_context *r300 = r300_context(pipe);
 217
 218     r300_blitter_save_states(r300);
 219     util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state);
 220
 221     util_blitter_clear_depth_stencil(r300->blitter, dst, clear_flags, depth, stencil,
 222                                      dstx, dsty, width, height);
 223 }
 224
 225 void r300_init_blit_functions(struct r300_context *r300)
 226 {
 227     r300->context.clear = r300_clear;
 228     r300->context.clear_render_target = r300_clear_render_target;
 229     r300->context.clear_depth_stencil = r300_clear_depth_stencil;
 230     r300->context.resource_copy_region = r300_resource_copy_region;
 231 }